To streamline installation of multi-port systems, the TCO unites all FXS ports on the Xorcom unit into a single telecom connector on the real panel.

A special telecom cable with 32 color-coded twisted pairs (supplied as part of the option) routes the 32 ports to the building telephony wiring Crone. The Telco port is connected in parallel to the front panel FXS ports, and does not disable it so the front panel RJ11 connectors can be use in parallel with the Telco port for maintenance or other purposes. In addition, the indication lights are active when the Telco port is in use.